Question 127016
{{{20-x < k}}} Start with the given inequality


{{{20-x < 0}}} Plug in {{{k=0}}}



{{{-x<0-20}}}Subtract 20 from both sides



{{{-x<-20}}} Combine like terms on the right side



{{{x>(-20)/(-1)}}} Divide both sides by -1 to isolate x  (note: Remember, dividing both sides by a negative number flips the inequality sign) 




{{{x>20}}} Divide


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Answer:

So our answer is {{{x>20}}}